Dipartimento di Scienze della Salute, Università degli Studi dell'Aquila, Via Vetoio, Coppito 2, 67100 L'Aquila, Italy.
Clin Neurophysiol. 2012 Jan;123(1):129-36. doi: 10.1016/j.clinph.2011.06.007. Epub 2011 Jul 7.
The aim of this study was to investigate the effects induced by an exposure to a GSM signal (Global System for Mobile Communication) on brain BOLD (blood-oxygen-level dependent) response, as well as its time course while performing a Go-NoGo task.
Participants were tested twice, once in presence of a "real" exposure to GSM radiofrequency signal and once under a "sham" exposure (placebo condition). BOLD response of active brain areas and reaction times (RTs) while performing the task were measured both before and after the exposure.
RTs to the somatosensory task did not change as a function of exposure (real vs sham) to GSM signal. BOLD results revealed significant activations in inferior parietal lobule, insula, precentral and postcentral gyri associated with Go responses after both ''real'' and ''sham'' exposure, whereas no significant effects were observed in the ROI analysis.
The present fMRI study did not detect any brain activity changes by mobile phones. Also RTs in a somatosensory task resulted unaffected.
No changes in BOLD response have been observed as a consequence of RF-EMFs exposure.
本研究旨在探究在执行 Go-NoGo 任务时，暴露于全球移动通信系统（GSM）信号下对大脑血氧水平依赖（BOLD）反应的影响及其时程。
参与者接受了两次测试，一次是在“真实”GSM 射频信号暴露下，一次是在“假”暴露（安慰剂条件）下。在暴露前后测量了主动脑区的 BOLD 反应和执行任务时的反应时间（RT）。
RTs 对躯体感觉任务的反应不受 GSM 信号暴露（真实与假）的影响。BOLD 结果显示，在“真实”和“假”暴露后，与 Go 反应相关的下顶叶、岛叶、中央前回和中央后回均有显著激活，而 ROI 分析中未观察到显著影响。
本 fMRI 研究未发现移动电话引起的任何大脑活动变化。躯体感觉任务的 RT 也未受影响。
RF-EMF 暴露未观察到 BOLD 反应的变化。
